dedicated power supply?

[resop27]

About 5 months ago I upgraded to a rosewill 500w power supply nothing is wrong with it just I have decided to go sli with two bfg 9800gtx's and power supplies can get kinda pricy when your looking at 700w considering I just paid 50$ 4-5 months ago.

So I was looking and came across this http://www.newegg.com/Product/Product.aspx?Item=N82E16817101025

seems pretty interesting not sure how the work or how well they work. Or if it will even do the job.

Ill be using the two gpus a q6600 quad and 4 gigs of ram with a main of 500w. any suggestions.

 

[protokiller]

What is it exactly that these things do anyway?

Do they supply power only to the gpu or cpu or something like that?

 

[PCnut]

You could do this and you should be ok. If you had a better power supply you could run it off 500 watt power supply.

I have a q6600 over clocked to 3.6ghz. 4gb ram, one optical Drive, 4 hard drives in raid 0 and a 3870 and with full load the most i have ever seen my system use is 280 watts. this is measuring it with a fan controler and also checking my self with a amp meter. but i would not try this with a Rosewell power supply maybe if you had one of the Tier 1 or Tier 2 power supplies.

http://www.xtremesystems.org/forums/showthread.php?t=108088 look at this and it will show you good power supplies.

 

[sarwar_r87]

it should be fine

 

[stoner133]

The only drawback to the supply you posted the link to is that there is no connection to the motherboard so its either on all the time or you would have to switch it on before you turn on the system.

This one here does have a connection to your motherboard and will power on at the same time when you hit the power button on your case. I have used one of these in a crossfire system I built for a customer and it worked great. It's also cheaper then the one you posted the link to while also being more powerful.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817153069

 

[jpbg]

don't buy that junk it cost as much as a powersupply that would run your whole system.
That thing only has 20 amps which is horrible for sli
This power supply is 80+ and has a 60amp rail and its only $99 aafter rebate and can run your whole system
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139006

 

[resop27]

So the 750w would be sufficient enough for sli 9800gtx's, q6600 quad,4 gigs of memory two 3 sata drives? Just making sure because that psu has some excellent reviews. But I was told I would need 1000w plus for the two 9800's

 

[invisik]

500w is enough i have an antec eartwatt running my q6600 @ 3.0 4gig ram 2hd 1 blueray player- 4 120mm fans with a 9800gx2 oc @ 735/1125 it runs fine! now im trying to see if 2 gtx 260 will work. good luck!

 

[jpbg]

you know actually im not sure if you would be cutting it close or not but if you are worried i would definitely consider this psu next its modular and 85%+ in efficiency
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371009

 

[resop27]

What about the voltages on the 12v rails. Ha sorry I just dont want to put out a 140$ and find it I have a problem

 

[FrozenGpu]

You are better off not risking it, b/c as one person put it rosewill are a pretty low tier PSU, under a heavier load who knows what will happen, just buy yourself a good corsair PSU, or a PC power and cooling PSU, and you will be fine.

 

[Grimmy]

This was off another thread... speaking of 750w:

CORSAIR CMPSU-750TX 750W

$119 - $20 rebate... free shipping = $99 bucks. Dang... . o O (60a on the 12v = 720w)